Reamer with rapid changing knife rod

Abstract

The invention discloses a reamer for changing arbor quickly, comprising an arbor, a knife handle and a lock sleeve. An arbor inserting end is inserted in a knife handle receiving hole, the section of arbor inserting end is regular hexagon or other polygonoun, with arc recesses disposed on the periphery. The knife handle receiving hole matches with the arbor inserting end. Steel ball location hole for receiving the steel ball is provided on the hole wall, steps and clamp spring groove are provided on periphery of the arbor inserting end, a clamp spring stop ring and a steel ball stop ring are equiped on inner wall of the lock sleeve. The lock sleeve is inserted on the arbor inserting end via a coil spring and the clamp spring, the steel ball location hole is vertical to the receiving hole, and the diameter of the steel ball is the same as that of the arc groove. Quickly changing of the arbor can be achieved by pulling the lock sleeve towards the arbor side, while in use, rotating the arbor by one hand, and holding the lock sleeve by the other hand make the reamer more easily align to the workpiece. Perforated circular hole is provided on root of the arbor inserting end for receiving an applying force rod, meanwhile the arbor can be used independently.

Description

technical field [0001] The invention relates to the technical field of hardware tools, in particular to manual hardware tools. Background technique [0002] The reamer is a hand-made hardware tool widely used at present. The tool holder and handle of the traditional reamer are fixedly connected together. Each tool holder must be equipped with its own handle. The handle needs to be replaced as a whole, resulting in a waste of material for the handle. [0003] In order to realize the replacement of the tool holder, a reamer with a separate tool holder and handle has appeared on the market. One end of the handle is the socket end, and the other end is the holding end. The insertion end of the reamer matches the socket hole of the socket end of the tool handle, and the side of the tool rod insertion end is provided with a protrusion. If the fit is too tight, it will not be easy to plug in and out, and if the fit is too loose, it will be easy to slip off. [0004] A locking sl...

AI Technical Summary

Problems solved by technology

[0002] The reamer is a hand-made hardware tool widely used at present. The tool holder and handle of the traditional reamer are fixedly connected together. Each tool holder must be equipped with its own handle. The handle needs to be replaced as a whole, resulting in waste of handle material

[0003] In order to realize the replacement of the tool holder, a reamer with a separate tool holder and handle has appeared on the market. One end of the handle is the socket end, and the other end is the holding end. The insertion end of the reamer matches the socket hole of the socket end of the tool handle, and the side of the tool rod insertion end is provided with a protrusion. Protrusion, if the fit is too tight, it will not be easy to plug in and out, and if the fit is too loose, it will be easy to slip off

[0004] A locking sleeve is often used for the cooperation between the screwdriver and the handle of the electric tool. The insertion end of the knife rod is a cylinder, and the side of the cylinder is provided with a protrusion. The socket hole of the handle matches the insertion end of the knife rod. The locking sleeve Cooperate with the thread of the socket end of the handle. After inserting the socket end of the knife rod into the socket hole of the handle, the socket hole will lock the socket end of the knife rod tightly through the tightening of the locking sleeve. This structure requires the lock The tool holder can only be inserted and pulled out by loosening the tight sleeve. After the tool holder is replaced, the locking sleeve must be tightened before use, which cannot be replaced quickly, and the locking sleeve rotates synchronously with the handle during use, which is not easy to hold

[0005] The above hand tools cannot be used alone if the blade leaves the handle

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